/Engine/Source/Editor/LevelEditor/Public/LevelViewportLayout.h
Builds a viewport layout and returns the widget containing the layout
virtual [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) > BuildViewportLayout ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SDockTab](API\Runtime\Slate\Widgets\Docking\SDockTab) > InParentDockTab, [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FEditorViewportTabContent](API\Editor\UnrealEd\FEditorViewportTabContent) > InParentTab, const [FString](API\Runtime\Core\Containers\FString) & LayoutString )